How about attics/usable space under the roof ?

Personally, I think roofs in general are the most frustrating thing when it comes to building! I constantly have them clip in to rooms (apparently using fencing as banisters to have an open view to the first floor really screws with the game in recognizing the space as a room). I've made a few attics, there are mods you can download with objects that make a slanted wall for that low-ceiling, attic-feel. But I agree, then the camera does that weird-bouncy, jilting around nonsense if you try to zoom in.